Lot has headed off to live near Sodom and Gomorrah. He quickly becomes entwined in the life and politics of Sodom and when an enemy raiding party attack the city, he is caught up with the captives (Genesis 14:1-12). This is reported back to Abram and I guess it would have been easy for him to shrug his shoulders and say that Lot had chosen and made his own bed to lie in. However, he does not. Instead he puts together a fighting force of 318 men from his household which confirms that he was a powerful clan leader and sets out to rescue his nephew and defeat the enemy threat (4:13-16).
Abram has learnt to trust God with regards to provision, protection, place/presence and people. However, when his people in the form of his nephew are attacked, he doesn’t sit passive. Abram is concerned for Lot, he looks out for him. Later, he will intercede for him.
We can trust God for these things too. We can trust him when it comes to the wellbeing of our families. However, this does not mean that we sit back when they are at risk, especially spiritual risk. It’s exactly because we trust God in these things that we act.